Haakon III was a king of Norway who reigned from 1047 to 1066. He was the son of King Magnus I and became known for his efforts to strengthen the monarchy and consolidate power in Norway. His reign was marked by conflicts with local chieftains and attempts to expand Norwegian influence. During his rule, Haakon III also faced challenges from neighboring regions, including Denmark. He is remembered for his military campaigns and efforts to promote Christianity in Norway. His reign ended with his death in 1066, after which he was succeeded by King Magnus II.